Determine the power by looking at the numerator of the exponent.
Determine the root by looking at the denominator of the exponent.
Using the base as the radicand, raise the radicand to the power and use the root as the index.
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Answer:
42 is itself it's highest common factor
Make sure they have common denominators.
-2/3 x (2/2) = -4/6
-4/6 + -4/6 = -8/6
-8/6 = - 1 2/6
-1 2/6 or -1 1/3 simplified, is your answer
hope this helps
